Latex Stuff, Don't mind this , don't post anything here

Integral over space in polar coordinates

$\displaystyle\int_{2\pi}^{0} \int_{\infty}^{0} f(r,θ) \ r \ dr \ dθ$

Gaussian (normal) Distribution

$\dfrac{1}{\sqrt{2\pi}\sigma} \text{e}^{\dfrac{(x-\mu)^{2}}{2 \sigma^{2}}}$

Nth roots of unity

$z^{n} = 1 ⇒ z = e^{\dfrac{2πi}{n}}$

Cauchy's Integral Formula

$f(a) = \dfrac{1}{2\pi i} \displaystyle\oint_{\gamma} \dfrac{f(z)}{z-a} dz$

Fourier Transform

$f(x) = \displaystyle\int_{- \infty}^{\infty} F(k) e^{2\pi i k x} dk$

$F(k) = \displaystyle\int_{- \infty}^{\infty} f(x) e^{-2\pi i k x} dx$

Riemann Zeta Function

$\varsigma (2n) = \displaystyle\sum_{k = 1}^{\infty} \dfrac{1}{2^{kn}} \\ \\ \ \text{ } \ \ \ \ \ \ \ \ = \dfrac{|B_{2n}|}{2(2n)!} (2 \pi)^{2n}, \text{ } n = 1,2,3,......$

you day not to interfere with your latex testing yet you put a abyss in mine

Nice $\tau$ formulas, @Percy Jackson!

$\large\tau \normalsize = 32 \displaystyle\lim_{n\to\infty} (n+1) \prod_{k=1}^{n} \dfrac{k^{2}}{(2k + 1)^{2}}$

[10420647:Percy Jackson]